Cases involving individuals who have been injured in crashes and collisions involving helicopters. A Helicopter Accident is an occurrence associated with the operation of an aircraft which takes place between the time any person boards the helicopter with the intention of flight and all such persons have disembarked, in which a person is fatally or seriously injured, the aircraft sustains damage or structural failure and/or the aircraft is missing or is completely inaccessible.
Twin Mountain is a village within the town of Carroll in the White Mountains of New Hampshire. It is named for two prominent summits which rise to the south of the village, North Twin Mountain and South Twin Mountain (4,902 ft/1,494 m). The village is located at the junction of U.S. highways 3 and 302, two major routes through the White Mountain notches. The Ammonoosuc River flows through the center of the village.